20513040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{673}}^1$

素因数の和:816

約数の個数: 80

約数和(自身を含む): 64186368

約数和(自身を除く): 43673328

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 127, 240, 254, 381, 508, 635, 673, 762, 1016, 1270, 1346, 1524, 1905, 2019, 2032, 2540, 2692, 3048, 3365, 3810, 4038, 5080, 5384, 6096, 6730, 7620, 8076, 10095, 10160, 10768, 13460, 15240, 16152, 20190, 26920, 30480, 32304, 40380, 53840, 80760, 85471, 161520, 170942, 256413, 341884, 427355, 512826, 683768, 854710, 1025652, 1282065, 1367536, 1709420, 2051304, 2564130, 3418840, 4102608, 5128260, 6837680, 10256520, 20513040]

約数ペア:

[(1, 20513040), (2, 10256520), (3, 6837680), (4, 5128260), (5, 4102608), (6, 3418840), (8, 2564130), (10, 2051304), (12, 1709420), (15, 1367536), (16, 1282065), (20, 1025652), (24, 854710), (30, 683768), (40, 512826), (48, 427355), (60, 341884), (80, 256413), (120, 170942), (127, 161520), (240, 85471), (254, 80760), (381, 53840), (508, 40380), (635, 32304), (673, 30480), (762, 26920), (1016, 20190), (1270, 16152), (1346, 15240), (1524, 13460), (1905, 10768), (2019, 10160), (2032, 10095), (2540, 8076), (2692, 7620), (3048, 6730), (3365, 6096), (3810, 5384), (4038, 5080)]